#!/bin/bash
num1=$1
num2=$2
add() {
	local total1=$(( $num1 + $num2 ))
	echo "sum total is $total"
	return 10
}
jf() {
	local total2=$(( $num1 - $num2 ))
	echo "sub total is $total"
	return 9
}
sc(){

	echo "求和: $total1  减法: $total2"
}



